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发明名称
防尘口罩
摘要
申请公布号
CN3201347D
申请公布日期
2001.09.26
申请号
CN01310417.9
申请日期
2001.02.06
申请人
中华造船厂
发明人
曹道祥
分类号
02-07-V0052
主分类号
02-07-V0052
代理机构
上海市东方专利事务所
代理人
李浩东
主权项
地址
200090上海市共青路130号
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